Home / 1,021,215,266.20-1,529,555,417.70-839,816,738.20

Finding the Fourth Proportional to 1,021,215,266.20, 1,529,555,417.70 and 839,816,738.20

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Solution

The fourth proportional to 1,021,215,266.20, 1,529,555,417.70 and 839,816,738.20 is: 1,257,860,398.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,215,266.20 : 1,529,555,417.70 = 839,816,738.20 : x
  2. Step 2: Convert to fraction form
    1,021,215,266.20/1,529,555,417.70 = 839,816,738.20/x
  3. Step 3: Cross multiply
    1,021,215,266.20x = 1,529,555,417.70 × 839,816,738.20
  4. Step 4: Simplify right side
    1,021,215,266.20x = 1,284,546,241,788,952,576
  5. Step 5: Solve for x
    x = 1,284,546,241,788,952,576/1,021,215,266.20
  6. Step 6: Final answer
    x = 1,257,860,398.59

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.